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High voltage Mg-doped Na0.67Ni0.3-xMgxMn0.7O2 (x = 0.05, 0.1) Na-ion cathodes with enhanced stability and rate capability
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dc.contributor.author | Singh, Gurpreet | |
dc.contributor.author | Tapia-Ruiz, Nuria | |
dc.contributor.author | Lopez Del Amo, Juan Miguel | |
dc.contributor.author | Maitra, Urmimala | |
dc.contributor.author | Somerville, James W. | |
dc.contributor.author | Armstrong, A. Robert | |
dc.contributor.author | Martinez de Ilarduya, Jaione | |
dc.contributor.author | Rojo, Teófilo | |
dc.contributor.author | Bruce, Peter G. | |
dc.date.accessioned | 2016-08-15T15:30:19Z | |
dc.date.available | 2016-08-15T15:30:19Z | |
dc.date.issued | 2016-07-26 | |
dc.identifier | 245029337 | |
dc.identifier | 4b09dd54-b101-4250-ab66-5e863b240bb3 | |
dc.identifier | 84979889703 | |
dc.identifier | 000380576700026 | |
dc.identifier.citation | Singh , G , Tapia-Ruiz , N , Lopez Del Amo , J M , Maitra , U , Somerville , J W , Armstrong , A R , Martinez de Ilarduya , J , Rojo , T & Bruce , P G 2016 , ' High voltage Mg-doped Na 0.67 Ni 0.3-x Mg x Mn 0.7 O 2 (x = 0.05, 0.1) Na-ion cathodes with enhanced stability and rate capability ' , Chemistry of Materials , vol. 28 , no. 14 , pp. 5087-5094 . https://doi.org/10.1021/acs.chemmater.6b01935 | en |
dc.identifier.issn | 0897-4756 | |
dc.identifier.other | ORCID: /0000-0003-1937-0936/work/28123627 | |
dc.identifier.uri | https://hdl.handle.net/10023/9306 | |
dc.description | At CIC Energigune this work was financially supported by LINABATT project from Ministerio de Economía Competitividad (ENE2013-44330-R). P.G.B. (University of Oxford) is indebted to the Engineering and Physical Sciences Research Council, including the SUPERGEN program, for financial support. | en |
dc.description.abstract | Magnesium substituted P2-structure Na0.67Ni0.3Mn0.7O2 materials have been prepared by a facile solid-state method and investigated as cathodes in sodium-ion batteries. The Mg-doped materials described here were characterized by X-ray diffraction (XRD), 23Na solid-state nuclear magnetic resonance (SS-NMR), and scanning electron microscopy (SEM). The electrochemical performance of the samples was tested in half cells vs Na metal at room temperature. The Mg-doped materials operate at a high average voltage of ca. 3.3 V vs Na/Na+ delivering specific capacities of ∼120 mAh g-1, which remain stable up to 50 cycles. Mg doping suppresses the well-known P2-O2 phase transition observed in the undoped composition by stabilizing the reversible OP4 phase during charging (during Na removal). GITT measurements showed that the Na-ion mobility is improved by 2 orders of magnitude with respect to the parent P2-Na0.67Ni0.3Mn0.7O2 material. The fast Na-ion mobility may be the cause of the enhanced rate performance. | |
dc.format.extent | 8 | |
dc.format.extent | 4148953 | |
dc.language.iso | eng | |
dc.relation.ispartof | Chemistry of Materials | en |
dc.subject | QD Chemistry | en |
dc.subject | Materials Chemistry | en |
dc.subject | Chemical Engineering(all) | en |
dc.subject | Chemistry(all) | en |
dc.subject | NDAS | en |
dc.subject.lcc | QD | en |
dc.title | High voltage Mg-doped Na0.67Ni0.3-xMgxMn0.7O2 (x = 0.05, 0.1) Na-ion cathodes with enhanced stability and rate capability | en |
dc.type | Journal article | en |
dc.contributor.sponsor | EPSRC | en |
dc.contributor.institution | University of St Andrews. School of Chemistry | en |
dc.identifier.doi | 10.1021/acs.chemmater.6b01935 | |
dc.description.status | Peer reviewed | en |
dc.identifier.url | http://www.scopus.com/inward/record.url?scp=84979889703&partnerID=8YFLogxK | en |
dc.identifier.grantnumber | EP/I029273/1 | en |
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